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May 25, 2019
05/19

by
Hanno

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56, vi, 49 p. : 23 cm

Topic: Africa -- Discovery and exploration

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519

Jul 8, 2008
07/08

by
Hanno

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Book digitized by Google from the library of the University of Michigan and uploaded to the Internet Archive by user tpb.

Source: http://books.google.com/books?id=rD0FAAAAMAAJ&oe=UTF-8

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545

Apr 11, 2008
04/08

by
Hanno

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Book digitized by Google from the library of the University of Michigan and uploaded to the Internet Archive by user tpb.

Source: http://books.google.com/books?id=KFklAAAAMAAJ&oe=UTF-8

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Jan 3, 2017
01/17

by
hanno

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Applied IT security is largely a science-free field. The IT-Security industry is selling a range of products with often very questionable and sometimes outright ridiculous claims. Yet it's widely accepted practice among users and companies that protection with security appliances, antivirus products and firewalls is a necessity. There are no rigorous scientific studies that try to evaluate the effectiveness of most security products or strategies. Evidence-based IT security could provide a way...

Source: https://media.ccc.de/v/33c3-8169-in_search_of_evidence-based_it-security

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May 5, 2009
05/09

by
Hanno

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Book digitized by Google from the library of Oxford University and uploaded to the Internet Archive by user tpb.

Source: http://books.google.com/books?id=GYABAAAAQAAJ&oe=UTF-8

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396

Jun 20, 2009
06/09

by
Hanno

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Book digitized by Google from the library of the New York Public Library and uploaded to the Internet Archive by user tpb.

Source: http://books.google.com/books?id=qbMBAAAAYAAJ&oe=UTF-8

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399

Apr 11, 2008
04/08

by
Hanno

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Book digitized by Google from the library of Harvard University and uploaded to the Internet Archive by user tpb.

Source: http://books.google.com/books?id=6P-VQIZ7rAwC&oe=UTF-8

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3.0

Jul 31, 2019
07/19

by
Hanno

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Piano - hanno

Topic: Exercise

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2.0

May 2, 2020
05/20

by
Hänno

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nachts 3:30 auf twitch. wtf https://t.co/Vylo6TBrXf Source: https://twitter.com/HandIOfIBlood/status/1256398435818881024 Uploader: Hänno

Topics: Twitter, video

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4.0

May 2, 2020
05/20

by
Hänno

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"solange das keiner reported ist das kein problem - ok" https://t.co/wxF7DQlrAd Source: https://twitter.com/HandIOfIBlood/status/1256399797541625856 Uploader: Hänno

Topics: Twitter, video

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37

Sep 22, 2013
09/13

by
Hanno Essen

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A point mass at the center of an ellipsoidal homogeneous fluid is used as a simple model to study the effect of rotation on the shape and external gravitational field of planets and stars. Maclaurin's analytical result for a homogenous body is generalized to this model. The absence of a third order term in the Taylor expansion of the Maclaurin function leads to further simple but very accurate analytical results connecting the three observables: oblateness ($\epsilon$), gravitational quadrupole...

Source: http://arxiv.org/abs/astro-ph/0403328v1

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Sep 23, 2013
09/13

by
Hanno Hammer

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We show that the problem of finding the primary and secondary characteristic directions of a linear lossless optical element can be reformulated in terms of an eigenvalue problem related to the unimodular factor of the transfer matrix of the optical device. This formulation makes any actual computation of the characteristic directions amenable to pre-implemented numerical routines, thereby facilitating the decomposition of the transfer matrix into equivalent linear retarders and rotators...

Source: http://arxiv.org/abs/physics/0408069v2

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Sep 21, 2013
09/13

by
Hanno Hammer

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Correlated excitations in a plane circular configuration of identical atoms with parallel dipole moments are investigated. The collective energy eigenstates, their level shifts and decay rates are computed utilizing a decomposition of the atomic state space into carrier spaces for the irreducible representations of the symmetry group $\ZZ_N$ of the circle. It is shown that the index $p$ of these representations can be used as a quantum number analogously to the orbital angular momentum quantum...

Source: http://arxiv.org/abs/quant-ph/0402065v5

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Sep 21, 2013
09/13

by
Hanno Essen

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Theory and experiment on the London moment is reviewed. A simple mathematical model is motivated and then used to study the responses of a spherical superconductor to an external field and to rotation. It reveals a connection between perfect diamagnetism (Meissner effect) and the London moment. In the model neither of these are exact but the deviation from B=0 internal field in the former and from $B=(2mc/e)\Omega$ in the latter case is described by the same dimensionless parameter. Apart from...

Source: http://arxiv.org/abs/cond-mat/0407670v2

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Sep 23, 2013
09/13

by
Hanno Sahlmann

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In a remarkable paper, T. Koslowski introduced kinematical representations for loop quantum gravity in which there is a non-degenerate spatial background metric present. He also considered their properties, and showed that Gauss and diffeomorphism constraints can be implemented. With the present article, we streamline and extend his treatment. In particular, we show that the standard regularization of the geometric operators leads to well defined operators in the new representations, and we...

Source: http://arxiv.org/abs/1006.0388v2

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Sep 22, 2013
09/13

by
Hanno Essen

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The equations of motion for electromechanical systems are traced back to the fundamental Lagrangian of particles and electromagnetic fields, via the Darwin Lagrangian. When dissipative forces can be neglected the systems are conservative and one can study them in a Hamiltonian formalism. The central concepts of generalized capacitance and inductance coefficients are introduced and explained. The problem of gauge independence of self-inductance is considered. Our main interest is in...

Source: http://arxiv.org/abs/0901.3217v1

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Sep 22, 2013
09/13

by
Hanno Sahlmann

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In this article we review the foundations and the present status of loop quantum gravity. It is short and relatively non-technical, the emphasis is on the ideas, and the flavor of the techniques. In particular, we describe the kinematical quantization and the implementation of the Hamilton constraint, as well as the quantum theory of black hole horizons, semiclassical states, and matter propagation. Spin foam models and loop quantum cosmology are mentioned only in passing, as these will be...

Source: http://arxiv.org/abs/1001.4188v3

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Sep 19, 2013
09/13

by
Hanno Essen

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The starting point is the problem of finding the interaction energy of two coinciding homogeneous cubic charge distributions. The brute force method of subdividing the cube into $N^3$ sub-cubes and doing the sums results in slow convergence because of the Coulomb singularity. Using symmetry and algebra the Coulomb singularities can be eliminated. This leads to an accurate numerical algorithm as well as an interesting exact result relating the desired interaction energy to three other...

Source: http://arxiv.org/abs/physics/0701215v1

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Jul 5, 2019
07/19

by
König, Hanno

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x, 470 p. ; 24 cm

Topic: Mann, Heinrich, 1871-1950

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Oct 31, 2014
10/14

by
Hanno Pondaag

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Play Mastermind via the internet with each other! Or play against the computer! One or two players.

Topics: net, mastermind, game

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Sep 18, 2013
09/13

by
Hanno Sahlmann

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In this article, we investigate the assumption of equipartition of energy in arguments for the entropic nature of gravity. It has already been pointed out by other authors that equipartition is not valid for low temperatures. Here we additionally point out that it is similarly not valid for systems with bounded energy. Many explanations for black hole entropy suggest that the microscopic systems responsible have a finite dimensional state space, and thus finite maximum energy. Assuming this to...

Source: http://arxiv.org/abs/1102.2948v2

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Sep 20, 2013
09/13

by
Hanno Becker

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In this article we construct various models for singularity categories of modules over differential graded rings. The main technique is the connection between abelian model structures, cotorsion pairs and deconstructible classes, and our constructions are based on more general results about localization and transfer of abelian model structures. We indicate how recollements of triangulated categories can be obtained model categorically, discussing in detail Krause's recollement for the stable...

Source: http://arxiv.org/abs/1205.4473v1

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Sep 20, 2013
09/13

by
Hanno Hammer

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We investigate the possibility of semigroup extensions of the isometry group of an identification space, in particular, of a compactified spacetime arising from an identification map $p: \RR^n_t \to \RR^n_t / \Gamma$, where $\RR^n_t$ is a flat pseudo-Euclidean covering space and $\Gamma$ is a discrete group of primitive lattice translations on this space. We show that the conditions under which such an extension is possible are related to the index of the metric on the subvector space spanned...

Source: http://arxiv.org/abs/hep-th/9810141v3

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23

Nov 2, 2014
11/14

by
Hanno Pondaag

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Play Hangman via the internet with each other! Or play with 2 players on one PC!

Topics: net, hangman, game

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76

Jul 20, 2013
07/13

by
Hanno Essen

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A plasma blob is modeled as consisting of two homogeneous spheres of equal radius and equal but opposite charge densities that can move relative to each other. Relative translational and rotational motion are considered separately. Magnetic effects from the current density caused by the relative motion are included. Magnetic interaction is seen to cause an inductive inertia. In the relative translation case the Coulomb attraction, approximately a linear force for small amplitudes, causes an...

Source: http://arxiv.org/abs/1007.0216v1

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Jun 3, 2019
06/19

by
Beck, Hanno

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128 p. :

Topics: Ritter, Carl, 1779-1859 -- Anniversaries, etc., 1979, Ritter, Carl, 1779-1859, Geographers --...

1
1.0

Jun 30, 2018
06/18

by
Hanno Essén

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The gravitational Lagrangian based on special relativity and the assumption of a fourth rank tensor interaction, derived by Kennedy (1972), is used to check Mach's principle in a homogeneous isotropic expanding universe. The Lagrangian is found to be consistent with Mach's principle when the density is the critical density and inertial mass is suitably renormalized. The Kennedy approach only gives the Lagrangian to first order in the gravitational coupling constant. By invoking the equivalence...

Topics: Physics, General Physics

Source: http://arxiv.org/abs/1411.5608

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Sep 23, 2013
09/13

by
Hanno Hammer

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Spacetimes obtained by dimensional reduction along lattices containing a lightlike direction can admit semigroup extensions of their isometry groups. We show by concrete examples that such a semigroup can exhibit a natural order, which in turn implies the existence of preferred coordinate charts on the underlying space. Specifically, for spacetimes which are products of an external Minkowski space with an internal two-dimensional Lorentzian space, where one of the lightlike directions has a...

Source: http://arxiv.org/abs/hep-th/0510028v1

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Sep 18, 2013
09/13

by
Hanno Essen

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The importance of the Darwin-Breit interaction between electrons in solids at low temperatures is investigated. The model problem of particles on a circle is used and applied to mesoscopic metal rings in their normal state. The London moment formula for a rotating superconducting sphere is used to calculate the number, $N$, of superconducting electrons on the sphere. This number is found to be three times the radius, $R$, of the sphere divided by the classical electron radius, i.e.\...

Source: http://arxiv.org/abs/cond-mat/0002096v2

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Sep 19, 2013
09/13

by
Hanno Sahlmann

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We follow arguments of Verlinde and Klinkhamer, and construct two models of the microscopic theory of a holographic screen that allow for the thermodynamical derivation of Newton's law, with Newton's constant expressed in terms of a minimal length scale contained in the area spectrum of the microscopic theory. One of the models is loosely related to the quantum structure of surfaces and isolated horizons in loop quantum gravity. Our investigation shows that the conclusions reached by Klinkhamer...

Source: http://arxiv.org/abs/1010.2650v2

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Sep 21, 2013
09/13

by
Hanno Rein

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We study the interaction of a proto-planetary disk and a planet on a highly inclined orbit in the linear regime. The evolution of the planet is dominated by dynamical friction for planet masses above several Earth-masses. Smaller planets are dominated by aerodynamic drag, especially for very high inclinations and retrograde orbits. The time-scales associated with migration and inclination damping are calculated. For certain values of the inclination, the inclination damping time-scale is longer...

Source: http://arxiv.org/abs/1106.1869v2

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Sep 24, 2013
09/13

by
Hanno Sahlmann

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Quantum geometry, i.e., the quantum theory of intrinsic and extrinsic spatial geometry, is a cornerstone of loop quantum gravity. Recently, there have been many new ideas in this field, and I will review some of them. In particular, after a brief description of the main structures and results of quantum geometry, I review a new description of the quantized geometry in terms of polyhedra, new results on the volume operator, and a way to incorporate a classical background metric into the quantum...

Source: http://arxiv.org/abs/1112.1781v1

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42

Jul 20, 2013
07/13

by
Hanno Sahlmann

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As a toy model for the implementation of the diffeomorphism constraint, the interpretation of the resulting states, and the treatment of ordering ambiguities in loop quantum gravity, we consider the Hilbert space of spatially diffeomorphism invariant states for a scalar field. We give a very explicit formula for the scalar product on this space, and discuss its structure. Then we turn to the quantization of a certain class of diffeomorphism invariant quantities on that space, and discuss in...

Source: http://arxiv.org/abs/gr-qc/0609032v3

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8.0

Feb 7, 2019
02/19

by
Hardt, Hanno

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xii, 186 p. : 24 cm

Topic: Mass media and culture

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37

Sep 21, 2013
09/13

by
Hanno Sahlmann

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In general relativity, the fields on a black hole horizon are obtained from those in the bulk by pullback and restriction. Similarly, in quantum gravity, the quantized horizon degrees of freedom should result from restricting, or pulling-back, the quantized bulk degrees of freedom. This is not yet fully realized in the - otherwise very successful - quantization of isolated horizons in loop quantum gravity. In this work we outline a setting in which the quantum horizon degrees of freedom are...

Source: http://arxiv.org/abs/1104.4691v3

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Sep 19, 2013
09/13

by
Hanno Essen

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Darwin (1920) noted that when radiation can be neglected it should be possible to eliminate the radiation degrees-of-freedom from the action of classical electrodynamics and keep the discrete particle degrees-of-freedom only. Darwin derived his well known Lagrangian by series expansion in $v/c$ keeping terms up to order $(v/c)^2$. Since radiation is due to acceleration the assumption of low speed should not be necessary. A Lagrangian is suggested that neglects radiation without assuming low...

Source: http://arxiv.org/abs/physics/0701324v3

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Sep 18, 2013
09/13

by
Hanno Hammer

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Entanglement measures based on a logarithmic functional form naturally emerge in any attempt to quantify the degree of entanglement in the state of a multipartite quantum system. These measures can be regarded as generalizations of the classical Shannon-Wiener information of a probability distribution into the quantum regime. In the present work we introduce a previously unknown approach to the Shannon-Wiener information which provides an intuitive interpretation for its functional form as well...

Source: http://arxiv.org/abs/hep-th/9811118v4

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51

Oct 20, 2014
10/14

by
Hanno Pondaag

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A fun memory card game for single or multiple players. Memory card game with animals, birds, flowers, alphabet, the greek alphabet or numbers. Play together via the internet! Or play on one PC (single player or two players).

Topics: net, memory, card, game, kids, brain gym

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56

Sep 18, 2013
09/13

by
Hanno Essen

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We calculate the energy of a homogeneous one component plasma and find that the energy is lower for correlated motions of the particles as compared to uncorrelated motion. Our starting point is the conserved approximately relativistic (Darwin) energy for a system of electromagnetically interacting particles that arises from the neglect of radiation. For the idealized model of a homogeneous one component plasma the energy only depends on the particle canonical momenta and the vector potential....

Source: http://arxiv.org/abs/0803.0513v2

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Sep 21, 2013
09/13

by
Hanno Essen

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The Bohr-van Leeuwen theorem is often summarized as saying that there is no classical magnetic susceptibility, in particular no diamagnetism. This is seriously misleading. The theorem assumes position dependent interactions but this is not required by classical physics. Since the work of Darwin in 1920 it has been known that the magnetism due to classical charged point particles can only be described by allowing velocity dependent interactions in the Lagrangian. Legendre transformation to an...

Source: http://arxiv.org/abs/1008.1182v3

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37

Sep 17, 2013
09/13

by
Hanno Hammer

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The Poincare Equivalence Theorem states that any optical element which contains no absorbing components can be replaced by an equivalent optical model which consists of one linear retarder and one rotator only, both of which are uniquely determined. This has many useful applications in the field of Optics of Polarized Light. In particular, it arises naturally in attempts to reconstruct spatially varying refractive tensors or dielectric tensors from measurements of the change of state of...

Source: http://arxiv.org/abs/physics/0305034v3

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42

Sep 18, 2013
09/13

by
Hanno Rein

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I present a new kind of astronomical database based on small text files and a distributed version control system. This encourages the community to work collaboratively. It creates a decentralized, completely open and democratic way of managing small to medium sized heterogeneous astronomical databases and catalogues. The use of the XML file format allows an easy to parse and read, yet dynamic and extendable database structure. The Open Exoplanet Catalogue is based on these principles and...

Source: http://arxiv.org/abs/1211.7121v2

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15

Jun 25, 2018
06/18

by
Hanno Rein

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The multi-planetary system HD128311 hosts at least two planets. Its dynamical formation history has been studied extensively in the literature. We reanalyse the latest radial velocity data for this system with the affine-invariant Markov chain Monte Carlo sampler EMCEE. Using the high order integrator IAS15, we perform a fully dynamical fit, allowing the planets to interact during the sampling process. A stability analysis using the MEGNO indicator reveals that the system is located in a stable...

Topics: Earth and Planetary Astrophysics, Astrophysics, Instrumentation and Methods for Astrophysics,...

Source: http://arxiv.org/abs/1501.00980

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34

Sep 18, 2013
09/13

by
Hanno Hammer

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We work out the orthogonality relations for the set of Carniglia-Mandel triple modes which provide a set of normal modes for the source-free electromagnetic field in a background consisting of a passive dielectric half-space and the vacuum, respectively. Due to the inherent computational complexity of the problem, an efficient strategy to accomplish this task is desirable, which is presented in the paper. Furthermore, we provide all main steps for the various proofs pertaining to different...

Source: http://arxiv.org/abs/quant-ph/0212004v1

2
2.0

Jun 29, 2020
06/20

by
Möbius, Hanno

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239 pages ; 23 cm

Topics: Holz, Arno, 1863-1929 -- Criticism and interpretation, Holz, Arno, 1863-1929, Holz, Arno 1863-1929,...

17
17

Nov 2, 2014
11/14

by
Hanno Pondaag

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comment 0

Play tic-tac-toe via the internet with each other ! Or on your local area network (LAN) or via 2 PC's with a network cable between them.

Topics: net, tictactoe, game

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86

Sep 20, 2013
09/13

by
Hanno Essen

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The idea here is to use large relative velocities of electrons and nuclei in accelerator beams to increase the probability of fusion. The function of the electrons is to both screen the positive charge and to produce an increased parallel pinching current. The increase in reaction probability is estimated using the Darwin magnetic interaction energy approach.

Source: http://arxiv.org/abs/physics/0607138v1

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20

Jun 8, 2019
06/19

by
Hardt, Hanno

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xvii, 279 p. ; 22 cm

Topics: Communication -- Research -- United States, Communication and culture, Critical theory, Pragmatism

Hier gibt es das ganze Buch von Hanno Beck „Krebs ist heilbar. Dr. med. Ryke Geerd Hamer – Beispiel einer Erkenntnisunterdrückung“ , Amici di Dirk Verlagsgesellschaft, Köln, 1992, ISBN: 3-926755-03.2. Ich bitte dieses Buch entspannt zur Kenntnis zu nehmen! Tut man das, dann eröffnen sich neue Wege, falls man eine Diagnose bekommen sollte, die wirklich NIEMAND haben will. Wer mir jetzt nicht glaubt, der beschaffe sich bitte das Buch von Gisela Hompesch „Meine Heilung von Krebs mit...

Topics: Ist das Krebsproblem gelöst?, Das Krebsproblem ist gelöst, Heilungskrise, biologische...

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55

Jan 20, 2013
01/13

by
prof.Ahmad Hanno

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alexandria faculty of medicin < urology lecture

Topics: urology, pediatrics, testis